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本文讨论了边界元法在热传导反问题分析中的有效性,根据实测数据用轴对称边界元法反求边界上的换热系数,并同时确定柴油机的活塞温度场分布。计算结果表明,边界元法在处理这类问题时具有精度可控制、计算工作量小、计算时间比传统经验公式试凑法大为减少的优点。
In this paper, we discuss the validity of the BEM in the inverse heat conduction problem. Axially-symmetric boundary element method is used to reverse the heat transfer coefficient of the boundary and determine the temperature field distribution of the piston. The calculation results show that the BEM has the advantages of controllable precision, small computational load and much less computation time than the traditional empirical formula trial and error method when dealing with such problems.